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Blake's Hitch
The Blake's hitch is a friction hitch commonly used by arborists and tree climbers as an ascending knot. Unlike other common climbing hitches, which often use a loop of cord, the Blake's hitch is formed using the end of a rope. Although it is a stable knot, it is often backed up with a stopper knot, such as a figure-of-eight knot, for safety. It is used for both ascending and descending, and is preferred by many arborists over other hitches, such as the taut-line hitch, as it is less prone to binding. History The first known presentation of this knot was made by Heinz Prohaska in an Austrian guides periodical in 1981; in 1990, he presented it in a caving journal, ''Nylon Highway''. Separately, Jason Blake discovered the knot for himself and presented it to the arborist community in a letter to ''Arbor Age'' in 1994, after which it was enthusiastically adopted by arborists. It has since become well known under the name "Blake's hitch." Usage This hitch has two conventiona ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prusik Knot
A Prusik ( ) is a friction hitch or knot used to attach a loop of cord around a rope, applied in climbing, canyoneering, mountaineering, caving, rope rescue, ziplining, and by arborists. The term Prusik is a name for both the loops of cord used to tie the hitch and the hitch itself, and the verb is "to prusik" or "prusiking" (i.e. using a Prusik to ascend). More casually, the term is used for any friction hitch or device that can grab a rope (see autoblock). Due to the pronunciation, the word is often misspelled Prussik, Prussick, or Prussic. The Prusik hitch is named after its putative inventor, the Austrian mountaineer Karl Prusik. It was shown in a 1931 Austrian mountaineering manual for rope ascending. It was used on several mountaineering routes of the era to ascend the final summit, where a rope could be thrown over the top and anchored so that climbers could attain the summit by prusiking up the other side of the rope. A Prusik made from cord does little or no damage to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sailor's Hitch
The sailor's hitch is a secure, jam-proof hitch knot. A hitch knot is a type of knot that has the ability to fit to the size and shape of an object that it is being tied to. The sailor's hitch is similar in function and appearance to the swing hitch. The sailor's hitch can be used in such a way that allows a smaller rope to be attached to a large rope. The smaller rope should be pulled to the left while the bight should go through the final tuck to form the final product of a sailor's hitch. This knot can also serve the purpose of a cleat hitch. There is another variation of the knot with several more turns that is called the gripping sailor's hitch. The gripping sailor's hitch is commonly confused with the icicle hitch, but it has distinctions with the last tuck of the knot that allows them to be different. The sailor's knot is used in the following circumstances: *search and rescue *mountaineering *climbing *boating *horse and livestock *camping *scouting See also * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bachmann Knot
The Bachmann hitch (sometimes misspelled 'Bachman') is a friction hitch, named after the Austrian alpinist Franz Bachmann. It is useful when the friction hitch needs to be reset quickly or often or made to be self-tending as in crevasse and self-rescue. (See Prusik knot) The Bachmann hitch requires the use of a carabiner. It does not matter if the carabiner is locking or not. Most importantly, the carabiner must be of round cross section for friction. Grabbing hold of the carabiner will release the friction and allow the hitch to slide freely and thus be moved appropriately. To remove the Bachmann hitch, just unclip the top loop, hold on to the carabiner and pull the cord free. This knot is frequently tied using a sling made from 1" tubular webbing. In this case wrap the webbing 3 times around the rope (this means the carabiner gate must be opened 3 times in the tying of the knot) for normal (dry) applications. There are a limited number of applications that involve repeate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Klemheist Knot
The klemheist knot or French Machard knot is a type of friction hitch that grips the rope when weight is applied, and is free to move when the weight is released. It is used similarly to a Prusik knot or the Bachmann knot to ascend or descend a climbing rope. One advantage is that webbing can be used as an alternative to cord. The Klemheist is easier to slide up than a Prusik. The klemheist is also a way to attach a snubber to the anchor rope of small boats, with the advantage that it is easy to undo.Eric Vola, �Le nœud Machard et son histoire », site du CAF-Marseille, 2015 Sometimes the knot name is misspelled as "kleimheist", with an extra "i". Technique Make a secure loop of a cord (see Double fisherman's knot) that is definitely narrower than the rope. Wrap from one end around the rope two or three times in a direction that will be down. The loose end is then threaded through the starting end, and carefully tightened to leave the wraps neat. In use, strain must be take ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Friction Hitch
Friction is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other. Types of friction include dry, fluid, lubricated, skin, and internal -- an incomplete list. The study of the processes involved is called tribology, and has a history of more than 2000 years. Friction can have dramatic consequences, as illustrated by the use of friction created by rubbing pieces of wood together to start a fire. Another important consequence of many types of friction can be wear, which may lead to performance degradation or damage to components. It is known that frictional energy losses account for about 20% of the total energy expenditure of the world. As briefly discussed later, there are many different contributors to the retarding force in friction, ranging from asperity deformation to the generation of charges and changes in local structure. When two bodies in contact move relative to each other, due to these various ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arborist
An arborist, or (less commonly) arboriculturist, is a professional in the practice of arboriculture, which is the Plant cultivation, cultivation, management, and study of individual trees, shrubs, vines, and other perennial woody plants in dendrology and horticulture. Arborists generally focus on the health and safety of individual plants and trees, rather than managing forests or harvesting wood (silviculture or forestry). An arborist's scope of work is therefore distinct from that of either a forester or a lumberjack, logger. Scope of work In order for arborists to work near power wires, either additional training is required or they need to be certified as a Qualified Line Clearance Arborist or Utility Arborist (there may be different terminology for various countries). There is a variety of minimum distances that must be kept from power wires depending on voltage, however the common distance for low voltage lines in urban settings is 10 feet (about 3 metres). Arborists w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stopper Knot
A stopper knot (or simply stopper) is a knot that creates a fixed thicker point on an otherwise-uniform thickness rope for the purpose of preventing the rope, at that point, from slipping through a narrow passage, such as a hole in a block. To pass a rope through a block, or hole, is to reeve it. To pull it out is to unreeve it. Stopper knots prevent the rope from unreeving on its own. They are also used to lower the chances of rappelling off the end of a rope. "Stopper" has three distinct meanings in the context of knotting and cordage. A decorative stopper knot may be referred to as a lanyard knot. A monkey's tail "is a permanent or semipermanent stopper that is put in the bight as well as the end. It is also called single throat seizing, seized round turn, clinch, and pigtail...A small round turn is first taken, and a throat seizing, in length about a quarter of the round of the clinch, is put in. The monkey's tail is preferred for the purpose just described because it doe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Figure-eight Knot
The figure-eight knot or figure-of-eight knot is a type of stopper knot. It is very important in sailing, rock climbing and caving as a method of stopping ropes from running out of retaining devices. Like the overhand knot, which will jam under strain, often requiring the rope to be cut, the figure-eight will also jam, but is usually more easily undone than the overhand knot. The stevedore knot is an extension of simple figure-eight knot with an additional turn before the end is finally tightened. Different types Figure-eight loop The figure-eight loop is used like an overhand loop knot. This type of knot can be used in prusik climbing when used in conjunction with a climbing harness, a climbing rope, and locking carabiner designed for climbing, to ascend or descend with minimal equipment and effort. Figure-eight bend The figure-eight bend knot is used to "Rope splicing, splice" together two ropes, not necessarily of equal diameter. This knot is tied starting with ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taut-line Hitch
The taut-line hitch is an adjustable loop knot for use on lines under tension. It is useful when the length of a line will need to be periodically adjusted in order to maintain tension. It is made by tying a rolling hitch around the standing part after passing around an anchor object. Tension is maintained by sliding the hitch to adjust the size of the loop, thus changing the effective length of the standing part without retying the knot. It is typically used for securing tent lines in outdoor activities involving camping, by arborists when climbing trees, for tying down aircraft, for creating adjustable moorings in tidal areas, and to secure loads on vehicles. A versatile knot, the taut-line hitch was even used by astronauts during STS-82, the second Space Shuttle mission to repair the Hubble Space Telescope. Naming The adjustable loop forms of the rolling hitch and Magnus hitch, in addition to being called either of those two names, have also come to be known variousl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caving
Caving, also known as spelunking (United States and Canada) and potholing (United Kingdom and Ireland), is the recreational pastime of exploring wild cave systems (as distinguished from show caves). In contrast, speleology is the scientific study of caves and the cave environment.Caving in New Zealand (from Te Ara: The Encyclopedia of New Zealand, Accessed 2012-11.) The challenges involved in caving vary according to the cave being visited; in addition to the total absence of light beyond the entrance, negotiating pitches, squeezes, and water hazards can be difficult. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Knots
This list of knots includes many alternative names for common knots and lashings. Knot names have evolved over time, and there are many conflicting or confusing naming issues. The overhand knot, for example, is also known as the thumb knot. The figure-eight knot is also known as the Savoy knot or the Flemish knot. A * Aberdeen knot - preferred for closure of intradermal sutures * Adjustable bend – can be easily lengthened or shortened * Adjustable grip hitch – a simple hitch which may easily be shifted up and down the rope while slack * Albright special – used to tie two different diameters of line together, for instance to tie monofilament to braid *Alpine butterfly (also known as a butterfly loop) – a static loop mostly used by mountain climbers and rappellers for securing a carabiner to static rope * Alternate ring hitching – covering a ring in hitching can prevent damage * Anchor bend – attaching a rope to a ring or similar termination * Angler's loop – ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
